tracing-kickstart

Rust module used to bootstrap tracing and reduce code duplication across projects.

Intended for personal use only.

Example

This example loads the TracingConfig from a .env file by deserializing through a nested config struct.

Example .env file:

APP__TRACE__LOG_FILE_PATH="/tmp/tracing-kickstart-example.log"
APP__TRACE__COLLECTOR_URL="https://otel.example.com:4318"
APP__TRACE__COLLECTOR_AUTH_HEADER="Basic aHVudGVyMg=="
APP__TRACE__ANSI_OUTPUT=true

Implementation example

use config::{Config, Environment};
use dotenvy::dotenv;
use serde::Deserialize;
use tracing_kickstart::TracingConfig;

#[derive(Debug, Clone, Deserialize)]
pub struct Conf {
    // pulled in automatically from env vars
    trace: TracingConfig,
}

#[tokio::main]
async fn main() {
    // load config
    dotenv().ok(); // load vars from .env file
    let settings = Config::builder()
        .add_source(Environment::with_prefix("APP").separator("__").try_parsing(true))
        .build()
        .unwrap();
    let conf = settings.try_deserialize::<Conf>().unwrap(); // deserialize into Conf struct

    // collect attributes for this crate
    let attrs = tracing_kickstart::build_attrs!();
    attrs.dump(); // log attributes to stdout

    // set an optional override for the fallback env filter set by tracing_kickstart
    let custom_fallback_env_filter = None; //Some("warn,example_app=debug")

    // init tracing, receive a handle for the tracing providers
    let tracing_providers = tracing_kickstart::init(attrs, &conf.trace, custom_fallback_env_filter).unwrap();
    tracing_providers.register_globally(); // optionally register all configured providers globally
    tracing::info!(?conf.trace, "Tracing initialized");

    // app does some important work here
    println!("very important work");

    // graceful shutdown of various tracing providers (logs, metrics, traces) using the provided handle
    tracing::debug!("Shutting down tracing providers: {tracing_providers:?}");
    tracing_providers.shutdown();
}

Feature flags

Default: none

tokio_console - Enables tokio's console feature

• Pulls console-subscriber into dependency tree and handles required env filter updates

detector_hostresource - enables the HostResourceDetector

• Added attributes: host.id, host.arch

detector_os - enables the OsResourceDetector

• Added attributes: os_type

detector_process

• Enables the ProcessResourceDetector
• Added attributes: process.command_args, process.pid, process.runtime.version, process.runtime.name, process.runtime.description

detector_telemetry - enables the TelemetryResourceDetector

• Added attributes: telemetry.sdk.name, telemetry.sdk.language, telemetry.sdk.version

attrs_crate_name

• Adds an additional attribute (service.crate_name) for the crate name.
• This will only differ from service_name for crates/packages which contain hyphen's in their package name.
• E.g. for this library:
  • service.name: tracing-kickstart
  • service.crate_name: tracing_kickstart

attrs_origin

• Adds attributes for info regarding the tracing-kickstart package, e.g. the version, crate name, etc

attrs_version_expanded

• Adds attributes for each version part: service.version.major, service.version.minor, service.version.patch

exponential_histograms

• Adds support for exporting exponential histograms
  • Exponential histograms can be collected and exported to prometheus native histograms